mikro30elect

7/30/2019 MIKRO30elect

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SOLUTIONS are homogeneous mixtures of two or moresubstances which dissolve each other and each of its constituent

substances can not be distinguished physically. A smaller number of

substances in solution called the (substance) or the dissolved solute,

while the substance is more numerous than other substances in

solution is called the solvent. The composition of the solute and

solvent in the solution is expressed in the concentration of the

solution, while the mixing process of the solute and solvent form a

solution called a dissolution or solvation.


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Solution that can conduct electric current is called an

electrolyte solution.

Solution that can NOT conduct electric current is called an

non-electrolyte solution.


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Svante Arrhenius, Swedish chemist known from thetheory of electrolytes in 1884 that to date the theory persisted and

he almost was not awarded his doctorate at the University of

Upsala, Sweden, as revealed this theory. According to Arrhenius, an

electrolyte solution in water dissociates into electrically charged

particles called positive and negative ions (positive ions and

negative ions) Number of positive ion charge will be equal to the

charge of negative ions, so that the charge of ions in neutral

solution. Ions is in charge of delivering an electrical current.


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ELECTROLYTE SOLUTION

Electrical conductivity of electrolyte solution depends on the type and

concentration. Some of the electrolyte solution can conduct electricity very

well even though the concentration is small, this solution are called strong

electrolytes. While the electrolyte solution having a conductivity is weak

despite the high concentration is called weak electrolytes.

Strong electrolyte solution is a solution that can conduct electricity well. This is

because the solute will break down completely (the degree of ionization? = 1)

into ions in the solution that contains ions. Because many ions that can conduct

electric current, the conductivity strongly. the equation, strong electrolyte

ionization is characterized by one-way arrows to the right.


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Example:

NaCl (s) Na+

(aq) + Cl-(aq)

Classified as a strong electrolyte is:

1. Strong acids, such as HCl, HclO3, H2SO4, HNO3 and others.

2. Strong bases, the bases are alkali and alkaline earth groups, such as

NaOH, KOH, Ca(OH) 2, Ba(OH)2and others.

3. Salt which easy soluble, such as NaCl, KI, AL2(SO4)3and others


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Weak electrolyte solution is a solution that can conduct electrical current

with the weak. This is because the solute will unravel some of (the degree of

ionization?


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Based on the nature of the electrical conductivity, the solution was

divided into two non-electrolyte solutions and electrolyte

solutions. Properties of electrolytes and non electrolytes based on

the presence ofions in solution that electric current will flow. Ifthere are ions in solution, the solution is an electrolyte. If thesolution is not found the ion that soution is called non-electrolyte

solution.


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NON-ELECTROLYTE SOLUTION

In the non-electrolyte solution, the molecules are not ionized in solution, so

there is no charged ions that can conduct electric current. Belong to this type of

example:

- A solution of urea

- A solution of sucrose

- A solution of glucose

- A solution of alcohol andother

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